District officials say that surveillance and testing will be increased in communities near the trap location.

“This is a bit late in the season to see our first West Nile virus-positive mosquito sample,” district spokeswoman Jill Oviatt said. “But now that it’s here, we want to make sure residents know what they need to do to prevent getting infected with potentially serious viruses.”

Officials advised residents to inspect their yards for any standing water sources, which can serve as mosquito breeding sites.